Underlayer-enhanced perpendicular anisotropy of FePt films

Autor:	Chih-Huang Lai, Cheng-Han Yang, T. K. Tseng, Yun-Chung Wu
Rok vydání:	2006
Předmět:	Lattice constant Materials science Condensed matter physics Diffusion Composite number Ultimate tensile strength Perpendicular Static stress Perpendicular anisotropy Coercivity Condensed Matter Physics Electronic Optical and Magnetic Materials
Zdroj:	Journal of Magnetism and Magnetic Materials. 304:e237-e239
ISSN:	0304-8853
DOI:	10.1016/j.jmmm.2006.01.176
Popis:	(0 0 1)-orientation FePt films were successfully fabricated on hydrogen-terminated Si(1 0 0) substrates by inserting Cu underlayers. By using the Co intermediate layer to suppress the diffusion of Cu and Si, the perpendicular coercivity reaches 6500 Oe after 300 °C postannealing. The dynamic-stress-induced ordering by the formation of Cu 3 Si was the main reason for high coercivity. To improve the perpendicular anisotropy, Cu/CoFe/Ag composite underlayer was used. The large lattice constant of Ag provided a sufficient in-plane tensile static stress in FePt films. Both large perpendicular coercivity (8200 Oe) and good perpendicular squareness (∼0.9) were achieved for samples deposited at 300 °C.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fcd27d57233a5533cfa26272b7119c25 https://doi.org/10.1016/j.jmmm.2006.01.176 Zobrazit plný text záznamu Full Text from ScienceDirect